<template>
<el-container class="home-container">
  <!-- 头部区域 -->
  <el-header>
    <div class="title">
      <span>商品交易管理系统</span>
    </div>
    <el-button type="info" @click="goHome">首页</el-button>
  </el-header>
  <!-- 页面主体区域 -->
  <el-container>
    <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'">
      <div class="toggle-button" @click="toggleCollapse">|||</div>
      <!-- 侧边栏菜单区域 -->
      <el-menu background-color="#333744" text-color="#fff"
       active-text-color="#409eff" unique-opened :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
        <!-- 一级菜单 -->
        <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">
          <!-- 一级菜单的模板区域 -->
          <template slot="title">
            <!-- 图标 -->
            <i :class="iconObj[item.id]"></i>
            <!-- 文本 -->
            <span>{{ item.authName}}</span>
          </template>

          <!-- 二级菜单 -->
          <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children"
          :key="subItem.id" @click="saveNavState('/'+subItem.path)">
            <template slot="title">
            <!-- 图标 -->
            <i class="el-icon-menu"></i>
            <!-- 文本 -->
            <span>{{ subItem.authName}}</span>
            </template>
          </el-menu-item>
        </el-submenu>
      </el-menu>

    </el-aside>
    <!-- 右侧内容主题区域 -->
    <el-main>
      <!-- 声明路由出口 -->
      <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
// import { messageTip } from '@/api/messageTipAPI.js'
export default {
  data () {
    return {
      menuList: [],
      iconObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      // 是否折叠
      isCollapse: false,
      activePath: ''
    }
  },
  methods: {
    // 前往首页
    goHome () {
      this.$router.push('/home/welcome')
    },
    // 获取所有的菜单
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
    },
    // 点击切换菜单的折叠和展开
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    // 保存连接的激活状态
    saveNavState (activePath) {
      sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  },
  created () {
    this.getMenuList()
    this.activePath = sessionStorage.getItem('activePath')
  }
}
</script>

<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: 0;
  font-size: 20px;
  color: #fff;
  >div{
    display: flex;
    align-items: center;
    span{
      margin-left: 15px;
    }
  }
  #touxiang{
    width: 50px;
    border-radius: 50%;
    margin-top: 4px;
  }
}
.el-aside{
  background-color: #333744;
}
.el-main{
  background-color: #eaedf1;
}
// 菜单的图标与文字之间的距离
.iconfont{
  padding-right: 10px;
}
// 解决子菜单对不齐
.el-menu{
  border-right: none
}
.toggle-button{
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  text-align: center;
  color:#fff;
  letter-spacing: 0.3em;
  cursor: pointer;
}

  .el-dropdown-link {
    cursor: pointer;
    color: #409EFF;
  }
  .el-icon-arrow-down {
    font-size: 12px;
  }
</style>
